PIC12HV609-E/MS - 8-bit Flash MCU, 1.75KB, 8MSOP | Microchip
MPN: PIC12HV609-E/MS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.42 | $1.42 |
| 10 | $1.3 | $13.00 |
| 100 | $1.18 | $118.00 |
| 500 | $1.05 | $525.00 |
| 1,000 | $0.95 | $950.00 |
PIC12HV609-E/MS Overview
What is a PIC12 microcontroller? The PIC12 family is Microchip's baseline 8-bit mid-range microcontroller line, using a RISC-style Harvard architecture with a small instruction set (typically 35 instructions), single-cycle execution at the system clock, and integrated peripherals such as comparators, timers, and a watchdog. Within the broader hierarchy, PIC12 sits below PIC16/PIC18, and PIC microcontrollers belong to the 8-bit microcontroller category of embedded semiconductors.
Key features of the PIC12HV609-E/MS include 1.75 KB Flash (1K x 14 words), 64 bytes RAM, an 8 MHz internal oscillator, one 8-bit timer (TMR0), one 16-bit timer (TMR1), an enhanced mid-range core with 35 instructions and 8 hardware stack levels, 25 mA source/sink I/O drive, and a user-configurable analog comparator with hysteresis. The HV prefix means the device includes a built-in shunt regulator, allowing direct operation from 2.0 V to user-defined maximum (typical application: unregulated battery or rectified supply) without external regulation. The -E suffix denotes the -40C to +125C extended industrial temperature grade.
Architecturally, the PIC12HV609 uses the same enhanced mid-range core as the standard PIC12F609, but with an internal shunt regulator front-end instead of a direct VDD pin. This internal regulator drops the high input voltage down to the core's regulated logic rail, simplifying designs that would otherwise require external zener or LDO regulators. Program memory is Flash and self-programmable under software control, supporting in-circuit serial programming (ICSP).
Typical applications include battery-powered products where an unregulated stack must feed the MCU directly (HV variant specific), consumer appliances, simple sensor conditioning nodes, automotive body electronics within the -40C to +125C range, low-cost motor control loops, and any general-purpose 8-bit replacement for legacy PIC10/PIC12 designs requiring a small pin-count footprint. The device also fits remote controls, lighting controllers, and standby controllers in white goods.
When designing with this part, leave adequate ground copper under the exposed MSOP pad for thermal relief, place the 0.1 uF VDD decoupling capacitor within 2-3 mm of the VDD pin, and ensure ICSP connections (PGD/PGC) are accessible for production programming. The internal shunt regulator dissipates significant power at high input voltages, so derate VDD_MAX by application voltage to stay within the thermal envelope.
Drop-in alternatives for PIC12HV609-E/MS — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC12HV609-E/MS (same form factor and footprint) — differing in Internal Oscillator, Package, Timers, Core Architecture, Comparator.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC12HV609-I/MS
✅ Drop-In✓ In Stock
$0.76 / Unit
View Datasheet →PIC12HV609T-I/MS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC12HV609-E/MF
✅ Drop-In📋 Reference alternative (not in catalog)
PIC12F609-E/MS
✅ Drop-In✓ In Stock
$0.59 / Unit
View Datasheet →PIC12F609T-I/MD
✅ Drop-In✓ In Stock
$0.51 / Unit
View Datasheet →PIC12F609-I/MD
✅ Drop-In✓ In Stock
$0.71 / Unit
View Datasheet →PIC12HV609-E/MS Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit enhanced mid-range |
| Program Memory (Flash) | 1.75 KB (1K x 14 words) |
| RAM | 64 bytes |
| I/O Pins | 6 |
| Internal Oscillator | 8 MHz |
| Max CPU Frequency | 20 MHz |
| Timers | 1 x 8-bit (TMR0), 1 x 16-bit (TMR1) |
| Comparators | 1 (user-configurable, with hysteresis) |
| I/O Source/Sink Current | 25 mA |
| Operating Voltage (VDD) | 2.0 V to 5.5 V (logic rail, regulated by internal shunt on HV variant) |
| Operating Temperature | -40C to +125C (extended industrial, -E suffix) |
| Watchdog Timer | Yes (WDT) |
| Brown-Out Reset (BOR) | Yes (enhanced) |
| ICSP (In-Circuit Serial Programming) | Yes |
| Package | 8-MSOP (3.00 mm width) |
| Mounting Type | Surface Mount |
| Instruction Set | 35 instructions, 8 stack levels |
| RoHS Status | Compliant (per distributor listings) |
PIC12HV609-E/MS Pin Configuration
| Pin 1 | VDD — Positive supply (internal HV shunt regulator input on HV variant) |
| Pin 2 | GP5/T1CKI/OSC1/CLKIN — GPIO / Timer1 clock input / oscillator input / external clock in |
| Pin 3 | GP4/AN3/T1G/OSC2/CLKOUT — GPIO / analog input / Timer1 gate / oscillator output / clock out |
| Pin 4 | GP3/MCLR/VPP — GPIO / Master Clear (reset) / programming voltage |
| Pin 5 | GP2/AN2/T0CKI/INT/COUT/CCP1 — GPIO / analog input / Timer0 clock / external interrupt / comparator output / CCP1 |
| Pin 6 | GP1/AN1/CIN-/ICSPCLK — GPIO / analog input / comparator inverting / ICSP clock |
| Pin 7 | GP0/AN0/CIN+/ICSPDAT — GPIO / analog input / comparator non-inverting / ICSP data |
| Pin 8 | VSS — Ground |
Typical Applications
PIC12HV609-E/MS is suitable for 7 applications: Battery-Powered Remote Controls, White Goods and Appliance Controllers, Automotive Body Electronics, LED Lighting and Standby Controllers, Industrial Sensor Signal Conditioning, Low-Cost Replacement for Legacy PIC Designs, Toys and Low-Cost Consumer Electronics.
Battery-Powered Remote Controls
The PIC12HV609-E/MS's integrated HV shunt regulator accepts an unregulated 9V battery rail directly, eliminating the external LDO that a standard PIC12F609 would require. With 1.75 KB Flash, 64 B RAM, and an 8 MHz internal oscillator, it executes typical infrared remote control protocols (RC5, NEC, SIRC) in firmware while the 16-bit TMR1 handles precise carrier generation. The comparator with hysteresis reads the IR demodulated signal with low noise. Power consumption falls below 1 uA in sleep mode with WDT enabled, supporting multi-year battery life from a single alkaline cell. The 8-MSOP package fits sub-10x30 mm remote PCBs, and the -40C to +125C extended temperature grade supports outdoor or garage applications.
Recommended
White Goods and Appliance Controllers
The PIC12HV609-E/MS targets washing machines, dishwashers, microwave ovens, and other white goods where direct connection to a rectified mains-derived DC rail is needed. The internal shunt regulator clamps the supply to safe levels without an external LDO, reducing BOM cost by 15-25 cents per board. The 25 mA source/sink I/O drives triacs, relays, and LED indicators directly. The analog comparator with hysteresis monitors zero-crossing signals for triac timing, while TMR1 generates precise time bases for cycle control. With -40C to +125C operation, the part handles under-hood and inside-appliance thermal extremes. Its 8-MSOP footprint is well-suited to compact control boards.
Recommended
Automotive Body Electronics
Within its -40C to +125C extended industrial range, the PIC12HV609-E/MS addresses automotive body modules where AEC-Q100 full qualification is not strictly required: interior lighting controllers, seat-position sensors, key fob receivers, and simple dashboard warning indicators. Its HV input stage tolerates load-dump transients when paired with a TVS clamp, and the small 8-MSOP package fits tight body-control modules. The 6 I/O pins drive LEDs, read switches, and communicate via LIN if implemented in firmware. For AEC-Q100-qualified alternatives, consider PIC12F615-I/SN or PIC12F1822-I/SN instead, but for cost-sensitive interior-only applications the PIC12HV609-E/MS delivers Microchip PIC reliability without automotive-grade premium pricing.
Recommended
LED Lighting and Standby Controllers
The PIC12HV609-E/MS runs as a standby or auxiliary controller in LED drivers, smart bulbs, and dimmer circuits, where its HV shunt regulator connects directly to rectified mains. The internal comparator monitors zero-cross for phase-angle dimming, and TMR1 generates PWM at kHz frequencies for leading-edge or trailing-edge dimming. With 1.75 KB Flash, designers implement multiple dimming protocols (0-10V, DALI-like, simple on/off) in firmware. The 25 mA I/O drive sources LED pilot circuits without external transistors. Its low sleep current preserves Energy Star standby budgets (<100 mW). For higher-power dimming, the MCU's PWM output drives a MOSFET gate via a level shifter.
Recommended
Industrial Sensor Signal Conditioning
In industrial process loops, the PIC12HV609-E/MS acts as a low-cost front-end digitizer for analog sensors, with the analog comparator providing threshold detection and TMR0/TMR1 handling pulse counting. The HV input stage accepts 4-20 mA loop drops or unregulated 24V rails. The internal 8 MHz oscillator delivers ±1% timing accuracy for frequency-to-voltage conversion. With ICSP and self-programmable Flash, field firmware updates via the same ICSP pins are possible. For sensor hubs requiring ADC, see the PIC12F675-E/SN (10-bit ADC, same 8-MSOP footprint) instead, but for digital-only sensors (Hall effect, optical interrupters) the PIC12HV609-E/MS is optimal.
Recommended
Low-Cost Replacement for Legacy PIC Designs
The PIC12HV609-E/MS is the recommended drop-in upgrade for older PIC10F, PIC12C508, PIC12C509, and PIC12CE518 designs, offering Flash-based self-programmability (vs OTP/Windowed EPROM), enhanced mid-range core, and the same 8-pin footprint family. With 1.75 KB Flash and 64 B RAM, code density is roughly 2x that of PIC12C508 (768 bytes), allowing modern C compilers or larger assembly projects. Existing code written for PIC12C5XX migrates with minimal changes due to register compatibility. Industrial users maintaining long-life products gain an in-circuit reprogrammable Flash part, eliminating the EPROM erase window. This makes it ideal for legacy industrial control board refreshes.
Recommended
Toys and Low-Cost Consumer Electronics
For high-volume cost-driven products like children's toys, novelty electronics, and disposable consumer devices, the PIC12HV609-E/MS provides 8-bit PIC capability at <$1 in OEM volumes. The internal 8 MHz oscillator removes the need for an external resonator, and the HV shunt regulator tolerates varying battery voltages from a fresh alkaline to near-end-of-life. With ICSP, manufacturers program firmware in-circuit during production. The 6 I/O pins drive LEDs, read buttons, control buzzers, and generate PWM for motor speed. Sub-$0.95 pricing in 1000-piece reels makes this MCU competitive in cost-sensitive designs where each cent of BOM matters.
Recommended
Recommended Products Summary
Engineering reference data for PIC12HV609-E/MS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12HV609-I/MS | PIC12HV609T-I/MS | PIC12HV609-E/MF | PIC12F609-E/MS | PIC12F609T-I/MD |
|---|---|---|---|---|---|---|
| Package | 8-MSOP | 8-MSOP - same | 8-MSOP - same | 8-DFN - same family, different package code | 8-MSOP - same | 8-MSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Internal HV Shunt Regulator | Yes | Yes | Yes | Yes | No (requires external 2.0-5.5V regulator) | No (requires external 2.0-5.5V regulator) |
| Operating Temperature | -40C to +125C (extended) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +125C (extended) | -40C to +125C (extended) | -40C to +85C (industrial) |
| Flash Memory | 1.75 KB | 1.75 KB | 1.75 KB | 1.75 KB | 1.75 KB | 1.75 KB |
| RAM | 64 bytes | 64 bytes | 64 bytes | 64 bytes | 64 bytes | 64 bytes |
| Internal Oscillator | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| AEC-Q100 Qualified | No (extended industrial only) | No | No | No | No | No |
| Approx. 1k+ Price (USD) | $0.95 | $0.92 | $0.92 | $0.95 | $0.85 | $0.85 |
Key Differentiators
- Internal HV shunt regulator eliminates external LDO (vs PIC12F609-E/MS)
- Extended industrial temperature range (-40C to +125C) (vs PIC12HV609-I/MS)
- Same peripheral set as PIC12F609 family for code compatibility (vs PIC12F683-I/P)
Design Notes
The PIC12HV609-E/MS internal shunt regulator dissipates power linearly from input voltage to internal VDD. Estimated: at VDD_IN = 9V and ICC = 5 mA (active), the shunt drops 4V * 5 mA = 20 mW, well within the MSOP thermal envelope. At 12V input the dissipation rises to 35 mW. For higher input voltages (>15V), add a series dropping resistor and verify the shunt's current rating stays within 50 mA worst case. Use a 0.1 uF VDD decoupling capacitor within 3 mm of the VDD pin.
The 8-MSOP package's exposed pad (where present) must be soldered to the PCB ground pour for thermal relief and mechanical stability. ICSP pins (GP0/ICSPDAT = pin 7, GP1/ICSPCLK = pin 6) must be accessible in production: either route to a programming header or test pads. Place the 0.1 uF decoupling capacitor on the same side as the IC, with traces shorter than 5 mm to minimize inductance. The MCLR/VPP pin (pin 4) should pull up to VDD via a 10 kohm resistor for normal operation; the ICSP programmer drives this pin to 13V during programming.
Do not apply voltage to the HV shunt input without limiting the input current via a series resistor - the internal shunt has a finite power rating. When migrating code from PIC12F609 to PIC12HV609, ensure that VDD voltage rises slowly enough that the shunt can absorb inrush - large filter capacitors on the HV input may exceed the shunt's transient rating. For sleep-mode operation, set unused GPIOs to outputs (low) to minimize current draw, and disable unused peripherals via their control registers.
The internal 8 MHz oscillator is factory-calibrated to ±1% at room temperature and ±2% across the -40C to +125C range - adequate for UART baud rates up to 9600 without further calibration. For higher baud rates (19200+) or precise timing (DALI, LIN), perform OSCTUNE calibration in firmware against a system reference clock. The analog comparator has user-configurable hysteresis; setting it to maximum (60 mV) prevents false triggering in noisy motor control environments.
Compliance Information
RoHS compliant per distributor listings (TrustCompo, DigiKey). Not AEC-Q100 qualified - use PIC12F615-I/SN or PIC12F1822-I/SN for AEC-Q100 automotive applications. Lead-free and matte-tin finish per Microchip packaging standards.
